1/3(9y-3)-2(y-1)=?
1个回答
=1/3(9y-3)-2y+2
=3y-1-2y+2
=y+1
=7/9除以7/15-1/3*16
=5-16/3
= -1/3
相关问题
9y^3-9y^2+2y+1=0 求3y-1=?
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